BITMAIN AntMiner S21 Pro - Page 18

S21 Pro User Guide
15
J8:2
The number of
chain4 chips is
less than the
design
Check if chain4 connection is normal, update
the firmware to the latest version, replace the
hashboard, or return to factory for repair
L1:1
Chain1 voltage
or frequency
exceeds the
limit
Update the firmware to the latest version, or
return to factory for repair
L2:1
Chain2 voltage
or frequency
exceeds the
limit
Update the firmware to the latest version, or
return to factory for repair
L4:1
Chain3 voltage
or frequency
exceeds the
limit
Update the firmware to the latest version, or
return to factory for repair
L8:1
Chain4 voltage
or frequency
exceeds the
limit
Update the firmware to the latest version, or
return to factory for repair
L:2
Cannot find the
mixed level
Update the firmware to the latest version, or
return to factory for repair
L1:2
Chain1 voltage
or frequency
mismatch
Update the firmware to the latest version, or
return to factory for repair
L2:2
Chain2 voltage
or frequency
mismatch
Update the firmware to the latest version, or
return to factory for repair
L4:2
Chain3 voltage
or frequency
mismatch
Update the firmware to the latest version, or
return to factory for repair
L8:2
Chain4 voltage
or frequency
mismatch
Update the firmware to the latest version, or
return to factory for repair